This document discusses different methods for collecting data, including computerized methods. It describes Computer-Assisted Telephone Interviewing (CATI), where questionnaires are programmed and displayed on a computer for telephone interviews. It was developed in 1970 and is widely used for large surveys. Computer-Assisted Personal Interviewing (CAPI) involves interviewers using portable computers instead of paper to directly enter data. Computer-Assisted Self-Interviewing (CASI) allows respondents to complete surveys themselves on a computer without an interviewer.

1. DATA COLLECTION
METHODS
By:
Bishal Kumar Shaw
IIHMR, Bangalore
PGDHM//2016-18//180

2. Type Data collection methods
■ Face‐to‐face interviews
■ Mail questionnaires
■ Web‐based questionnaires
■ Computerized Data Collection

3. Computerized Data Collection
Methods
■ CATI (Computer-Assisted Telephone
Interviewing)
■ CAPI (Computer-Assisted Personal Interviewing)
■ CASI (Computer-Assisted Self-Interviewing)

4. Computer-Assisted Telephone
Interviewing
■ It was developed in 1970 by Chilton Research Service of Randnor, Pennsylvania.
■ The Questionnaire is programmed and displayed on a terminal or micro computer
screen.
■ 1st widely applied technology
■ Used to carry out the large scale survey.
■ It includes Selection of the sample by means of a RDD (Random Digit Dialling).

5. Computer-Assisted Telephone
Interviewing■ Advantages:
– Less time consuming
– Less expensive
– Better accessibility.
– Higher response rate than the mail questionnaire.
– Can be fully automated using CATI (Computer Assisted Telephone
Interviewing) & saves data processing time.
■ Disadvantages:
– Theoretically limited to landline phone users
– The response rate is not as high as the face‐to‐face interview.
– Excludes people who do not have a phone, or only have cell phones

6. ■ Computer Assisted Personal Interviewing, is a idea instead of collecting data on
paper questionnaires, interviewers use portable computers to enter data directly.
■ Computer-assisted interviewing has been used in the past for, for example,
telephone surveys but it is only in the last five years or so that it has been used
for face-to-face interviews.
■ Example of CAPI is The British Crime Survey.
Computer-Assisted Personal Interviewing

7. Computer-Assisted Personal
Interviewing■ Advantages:
– Saves time involved in processing the data.
– Saves the interviewer from carrying around hundreds of questionnaires.
■ Disadvantages:
– Can be expensive to set up.
– Requires the interviewers to have computer and typing skills.

8. Computer-Assisted Self-Interviewing
■ Computer assisted self-interviewing (CASI) is a technique for survey data
collection in which the respondent uses a computer to complete the survey
questionnaire without an interviewer administering it to the respondent.
■ The questions are pre-recorded and the audio is played back for the respondent
one question at a time (audio computer assisted self-interviewing—ACASI).
■ Characteristics of this interviewing technique are:
– Help screens and courteous error messages are provided.
– Colourful screens and on and off-screen stimuli.
– Also used to conduct business-to-business research.

9. ■ Advantages
– Cost effective- No need to recruit or pay interviewers.
– Respondents are able to fill in the questionnaires themselves.
– No need to transcribe the results into a computer form.
– The computer program can be constructed so as to place the results
directly in a format.
– Can be placed on a web site, potentially attracting a world-wide audience.
■ Disadvantages
– The survey is likely to attract only respondents who are "computer savvy",
thus introducing potential bias to the survey.
– The survey can miss feedback and clarification/quality control.
Computer-Assisted Self-Interviewing

10. Thank You